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| author | Alan Coopersmith <alan.coopersmith@oracle.com> | 2013-08-10 12:07:51 -0700 |
|---|---|---|
| committer | Ulrich Sibiller <uli42@gmx.de> | 2016-10-19 21:40:28 +0200 |
| commit | 180991ce21c79c9a2816a5cbddc5232555fc954c (patch) | |
| tree | a4a7ef2dfd9c230365a0870da86472e0ee19bb43 /nx-X11 | |
| parent | 7156a20bc9c211becd299a264cce5db350147362 (diff) | |
| download | nx-libs-180991ce21c79c9a2816a5cbddc5232555fc954c.tar.gz nx-libs-180991ce21c79c9a2816a5cbddc5232555fc954c.tar.bz2 nx-libs-180991ce21c79c9a2816a5cbddc5232555fc954c.zip | |
Avoid memory leak/corruption if realloc fails in imLcPrs.c:parseline()
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>
Diffstat (limited to 'nx-X11')
| -rw-r--r-- | nx-X11/lib/X11/imLcPrs.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/nx-X11/lib/X11/imLcPrs.c b/nx-X11/lib/X11/imLcPrs.c index ad65da694..7745c53d2 100644 --- a/nx-X11/lib/X11/imLcPrs.c +++ b/nx-X11/lib/X11/imLcPrs.c @@ -574,9 +574,12 @@ parseline( if (token == STRING) { l = strlen(tokenbuf) + 1; while (b->mbused + l > b->mbsize) { - b->mbsize = b->mbsize ? b->mbsize * 1.5 : 1024; - if (! (b->mb = Xrealloc (b->mb, b->mbsize)) ) + DTCharIndex newsize = b->mbsize ? b->mbsize * 1.5 : 1024; + char *newmb = Xrealloc (b->mb, newsize); + if (newmb == NULL) goto error; + b->mb = newmb; + b->mbsize = newsize; } rhs_string_mb = &b->mb[b->mbused]; b->mbused += l; @@ -604,9 +607,12 @@ parseline( l = get_mb_string(im, local_mb_buf, rhs_keysym); while (b->mbused + l + 1 > b->mbsize) { - b->mbsize = b->mbsize ? b->mbsize * 1.5 : 1024; - if (! (b->mb = Xrealloc (b->mb, b->mbsize)) ) + DTCharIndex newsize = b->mbsize ? b->mbsize * 1.5 : 1024; + char *newmb = Xrealloc (b->mb, newsize); + if (newmb == NULL) goto error; + b->mb = newmb; + b->mbsize = newsize; } rhs_string_mb = &b->mb[b->mbused]; b->mbused += l + 1; @@ -621,9 +627,12 @@ parseline( local_wc_buf[l] = (wchar_t)'\0'; } while (b->wcused + l + 1 > b->wcsize) { - b->wcsize = b->wcsize ? b->wcsize * 1.5 : 512; - if (! (b->wc = Xrealloc (b->wc, sizeof(wchar_t) * b->wcsize)) ) + DTCharIndex newsize = b->wcsize ? b->wcsize * 1.5 : 512; + wchar_t *newwc = Xrealloc (b->wc, sizeof(wchar_t) * newsize); + if (newwc == NULL) goto error; + b->wc = newwc; + b->wcsize = newsize; } rhs_string_wc = &b->wc[b->wcused]; b->wcused += l + 1; @@ -634,9 +643,12 @@ parseline( local_utf8_buf[l] = '\0'; } while (b->utf8used + l + 1 > b->utf8size) { - b->utf8size = b->utf8size ? b->utf8size * 1.5 : 1024; - if (! (b->utf8 = Xrealloc (b->utf8, b->utf8size)) ) + DTCharIndex newsize = b->utf8size ? b->utf8size * 1.5 : 1024; + char *newutf8 = Xrealloc (b->utf8, b->utf8size); + if (newutf8 == NULL) goto error; + b->utf8 = newutf8; + b->utf8size = newsize; } rhs_string_utf8 = &b->utf8[b->utf8used]; b->utf8used += l + 1; @@ -657,9 +669,12 @@ parseline( while (b->treeused >= b->treesize) { DefTree *old = b->tree; int oldsize = b->treesize; - b->treesize = b->treesize ? b->treesize * 1.5 : 256; - if (! (b->tree = Xrealloc (b->tree, sizeof(DefTree) * b->treesize)) ) + int newsize = b->treesize ? b->treesize * 1.5 : 256; + DefTree *new = Xrealloc (b->tree, sizeof(DefTree) * newsize); + if (new == NULL) goto error; + b->tree = new; + b->treesize = newsize; if (top >= (DTIndex *) old && top < (DTIndex *) &old[oldsize]) top = (DTIndex *) (((char *) top) + (((char *)b->tree)-(char *)old)); } |